The first VLBI image of an Infrared-Faint Radio Source (2008)
Middelberg, E., Norris, R. P., Tingay, S., Mao, M. Y., Phillips, C. J., Hotan, A. W.
Context: To investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims: In the 1.4 GHz survey with the Australia Telescope Compact Array of the Chandra Deep...
Huynh, M. T., Jackson, C. A., Norris, R. P., Fernandez-Soto, A.
The Australia Telescope Hubble Deep Field-South (ATHDFS) survey of the Hubble Deep Field South reaches sensitivities of ~10 miceoJyJy at 1.4, 2.5, 5.2 and 8.7 GHz, making the ATHDFS one of the...
R. Schilizzi, S. Vogel, F. Paresce, M. Elvis, J. M. Wrobel, J. S. Ulvestad, ...
What causes the dichotomy between very powerful and very weak radio emission from AGNs? Perhaps the engines are the same but the jets get disrupted by dense ISM in radio-quiet objects, or else the...
Free-Free Absorption On Parsec Scales In Seyfert Galaxies. (2007)
A.L. Roy, J. S. Ulvestad, A. S. Wilson, C. G. Mundell, J. M. Wrobel, ...
2 10 5 cm 3 assuming a path length of 0.1 pc, typical of that expected at the inner edge of the obscuring torus. 1 Introduction Sensitivity of VLBI is constantly improving, and the recent advent of...
DETECTION OF A COLLIMATED JET TOWARDS A HIGH-MASS PROTOSTAR (2007)
K. J. Brooks, G. Garay, D. Mardones, R. P. Norris
Presentamos el descubrimiento de una fuente triple de radiocontinuo asociada al objeto IRAS 16547−4247. Los índices espectrales de los tres componentes son consistentes con un chorro impulsado por...
P. J. Outram, B. J. Boyle, R. F. Carswell, P. C. Hewett, R. E. Williams, R. P. Norris
We report on high resolution observations (R = 35000) of the Hubble Deep Field South QSO J2233-606 obtained with the University College London Echelle Spectrograph at the AAT. We present spectral...
Cold Gas and Star-Formation in a Merging Galaxy Sequence (2007)
We explore the evolution of the cold gas (molecular and neutral hydrogen) and the star-formation activity during galaxy interactions, using a merging galaxy sequence comprising both pre- and...
Motion and Properties of Nuclear Radio Components in Seyfert Galaxies Seen with VLBI (2007)
E. Middelberg, A. L. Roy, N. M. Nagar, T. P. Krichbaum, R. P. Norris, A. S. Wilson, ...
We report EVN, MERLIN and VLBA observations at 18 cm, 6 cm and 3.6 cm of the Seyfert galaxies NGC 7674, NGC 5506, NGC 2110 and Mrk 1210 to study their structure and proper motions on pc scales and to...
Radio Observations of the Hubble Deep Field (2007)
South Norris Hopkins, R. P. Norris, A. Hopkins, R. J. Sault, D. A. Mitchell, R. D. Ekers, ...
We have observed the Hubble Deep Field South and its anking elds with the Australia Telescope Compact Array down to an rms sensitivity of about 10 Jy at each of four radio bands (20, 13, 6, and 3...
K. J. Brooks, D. Mardones, R. P. Norris
Presentamos el descubrimiento de una fuente triple de radiocontinuo asociada al objeto IRAS 16547 4247. Los ndices espectrales de los tres componentes son consistentes con un chorro impulsado por una...
Extending the infrared radio correlation (2007)
Boyle, B. J., Cornwell, T. J., Middelberg, E., Norris, R. P., Appleton, P. N., Smail , Ian
Co-addition of deep (rms ∼ 30 μJy) 20-cm data obtained with the Australia Telescope Compact Array at the location of Spitzer Wide Field Survey (SWIRE) sources has yielded statistics of radio...
Starosta, K., Dewald, A., Dunomes, A., Adrich, P., Amthor, A. M., Baumann, T., ...
Transition rate measurements are reported for the first and the second 2+ states in N=Z 64Ge. The experimental results are in excellent agreement with large-scale Shell Model calculations applying...
Extending the infrared radio correlation (2007)
Boyle, B. J., Cornwell, T. J., Middelberg, E., Norris, R. P., Appleton, P. N., Smail, Ian
Co-addition of deep (rms about 30 microJy) 20 cm data obtained with the Australia Telescope Compact Array at the location of Spitzer Wide field survey (SWIRE) sources has yielded statistics of radio...
Detection of a Collimated Jet towards a High-Mass Protostar (2006)
G. Garay, K. J. Brooks, D. Mardones, R. P. Norris
Detection of a Collimated Jet towards a High-Mass Protostar
Chester, A., Adrich, P., Becerril, A., Bazin, D., Campbell, C. M., Cook, J. M., ...
A novel method for picosecond lifetime measurements of excited gamma-ray emitting nuclear states has been developed for fast beams from fragmentation reactions. A test measurement was carried out...
Optical and X-ray Identification of Faint Radio Sources in the GOODS-S ACS Field (2005)
Afonso, J., Mobasher, B., Koekemoer, A., Norris, R. P., Cram, L.
We present optical and X-ray identifications for the sixty-four radio sources in the GOODS-S ACS field revealed in the ATCA 1.4 GHz survey of the Chandra Deep Field South. Optical identifications are...
The Southern Hemisphere VLBI Experiment (SHEVE) (2004)
Preston, R. A., Jauncey, D. L., King, E. A., Jones, D. L., Ferris, R. H., Hoard, D. W., ...
Radio telescopes at eight sites in Astralia and one in South Africa operate as a VLBI array during several periods each year.
Motion and Properties of Nuclear Radio Components in Seyfert Galaxies Seen with VLBI (2004)
Middelberg, E., Roy, A. L., Nagar, N. M., Krichbaum, T. P., Norris, R. P., Wilson, A. S., ...
We report EVN, MERLIN and VLBA observations at 18 cm, 6 cm and 3.6 cm of the Seyfert galaxies NGC 7674, NGC 5506, NGC 2110 and Mrk 1210 to study their structure and proper motions on pc scales and to...
Motion and properties of nuclear radio components in Seyfert galaxies seen with VLBI (2004)
Middelberg, E., Roy, A. L., Nagar, N. M., Krichbaum, T. P., Norris, R. P., Wilson, A. S., ...
A Warped Accretion Disk and Wide Angle Outflow in the Inner Parsec of the Circinus Galaxy (2003)
Greenhill, L. J., Booth, R. S., Ellingsen, S. P., Herrnstein, J. R., Jauncey, D. L., McCulloch, P. M., ...
We present the first VLBI maps of H2O maser emission (lambda 1.3cm) in the nucleus of the Circinus Galaxy, constructed from data obtained with the Australia Telescope Long Baseline Array. The maser...
COLA II - Radio and Spectroscopic Diagnostics of Nuclear Activity in Galaxies (2002)
Corbett, E. A., Kewley, L. J., Appleton, P. N., Charmandaris, V., Dopita, M. A., Heisler, C. A., ...
We present optical spectroscopic observations of 93 galaxies taken from the infra-red selected COLA (Compact Objects in Low Power AGN) sample. The sample spans the range of far-IR luminosities from...
Detection of a Collimated Jet towards a High-mass Protostar (2002)
Brooks, K. J., Garay, G., Mardones, D., Norris, R. P.
Here we present the discovery of a triple radio continuum source associated with IRAS 16547-4247. The spectral indices of the three components are consistent with a jet powered by a massive O-type...
A massive star-forming region in a very early stage of evolution (2002)
Brooks, K. J., Garay, G., Mardones, D., Norris, R. P., Burton, M. G.
We present results from a study of two luminous IRAS sources thought to be young massive star-forming regions and which have no previously detected radio continuum emission: IRAS 15596-5301 and IRAS...
Spectral, polarization and time-lag properties of GRS 1915+105 radio oscillations (2002)
Fender, R.P., Rayner, D., Trushkin, S.A, Brien, K. O', Sault, R.J., Pooley, G.G., ...
Greenhill, L. J., Ellingsen, S. P., Norris, R. P., McGregor, P. J., Gough, R. G., Sinclair, M. W., ...
We report the cumulative results of five surveys for water maser emission at 1.35 cm wavelength in 131 active galactic nuclei (AGNs) and star-forming galaxies, conducted at the Parkes Observatory...
Spectral, polarisation and time-lag properties of GRS 1915+105 radio oscillations (2001)
Fender, R. P., Rayner, D., Trushkin, S. A., O'Brien, K., Sault, R. J., Pooley, G. G., ...
We report high sensitivity dual-frequency observations of radio oscillations from GRS 1915+105 following the decay of a major flare event in 2000 July. The oscillations are clearly observed at both...
Corbett, E. A., Norris, R. P., Heisler, C. A., Dopita, M. A., Appleton, P., Struck, C., ...
We present the first results from the COLA (Compact Objects in Low-power AGN) project which aims to determine the relationship between one facet of AGN activity, the compact radio core, with star...
Spectral, polarisation and time-lag properties of GRS 1915+106 radio oscillations (2001)
Fender, R.P., Rayner, D., Trushkin, S.A, Brien, K. O', Sault, R.J., Pooley, G.G., ...
Parsec-Scale Jets and Tori in Seyfert Galaxies (2000)
Roy, A. L., Wrobel, J. M., Wilson, A. S., Ulvestad, J. S., Norris, R. P., Mundell, C. G., ...
What causes the dichotomy between very powerful and very weak radio emission from AGNs? Perhaps the engines are the same but the jets get disrupted by dense ISM in radio-quiet objects, or else the...
Accretion and Outflow Traced by Water Masers in the Circinus AGN (2000)
Greenhill, L. J., Moran, J. M., Booth, R. S., Ellingsen, S. P., McCulloch, P. M., Jauncey, D. L., ...
The first VLBI images of water maser emission in the Circinus Galaxy AGN show both a warped, edge-on accretion disk and an outflow 0.1 to 1 pc from the central engine. The inferred central mass is...
Bipolar outflows in OH/IR stars (2000)
Zijlstra, Albert A., Chapman, J. M., Hekkert, P. Te Lintel, Likkel, L., Comeron, F., Norris, R. P., ...
We investigate the development of bipolar outflows during the early post-AGB evolution. A sample of ten OH/IR stars is observed at high angular resolution, including bipolar nebulae (OH231.8+4.2),...
Radio Observations of the Hubble Deep Field South - a New Class of Radio-Luminous Galaxies? (1999)
Norris, R. P., Hopkins, A., Sault, R. J., Ekers, R. D., Ekers, J., Badia, F., ...
We present the first results from a series of radio observations of the Hubble Deep Field South and its flanking fields. Here we consider only those sources greater than 100 microJy at 20 cm, in an...
Free-Free Absorption on Parsec Scales in Seyfert Galaxies (1999)
Roy, A. L., Ulvestad, J. S., Wilson, A. S., Colbert, E. J. M., Mundell, C. G., Wrobel, J. M., ...
Seyfert galaxies come in two main types (types 1 and 2) and the difference is probably due to obscuration of the nucleus by a torus of dense molecular material. The inner edge of the torus is...
The absorption line spectrum of the QSO J2233-606 (1998)
Outram, P J, Boyle, B J, Carswell, R F, Hewett, P C, Williams, R E, Norris, R P
We report on high resolution observations (R=35000) of the Hubble Deep Field South QSO J2233-606 obtained with the University College London Echelle Spectrograph at the AAT. We present spectral data...
Methanol Masers as Tracers of Circumstellar Disks (1998)
Norris, R. P., Byleveld, S. E., Diamond, P. J., Ellingsen, S. P., Ferris, R. H., Gough, R. G., ...
We show that in many methanol maser sources the masers are located in lines, with a velocity gradient along them which suggests that the masers are situated in edge-on circumstellar, or...
Star formation in southern Seyfert galaxies (1998)
Forbes, Duncan A., Norris, R. P.
We have produced radio maps, using the Australia Telescope Compact Array, of the central regions of six southern type 2 Seyfert galaxies (NGC 1365, 4945, 6221, 6810, 7582 and Circinus) with...
Star formation in southern Seyfert galaxies (1998)
Forbes, Duncan A., Norris, R. P.
We have produced radio maps, using the Australia Telescope Compact Array, of the central regions of six southern type 2 Seyfert galaxies (NGC 1365, 4945, 6221, 6810, 7582 and Circinus) with...
Bransford, M. A., Appleton, P. N., Heisler, C. A., Norris, R. P., Marston, A. P.
This is the first of two papers in which a study is made of a sample of 12 southern radio-luminous Seyfert galaxies. Our aim is to investigate possible correlations between radio morphology and...
A comprehensive search for extragalactic 6.7-GHz methanol masers (1997)
Phillips, C. J., Norris, R. P., Ellingsen, S. P., Rayner, D. P.
We have used the Australia Telescope Compact Array (ATCA) to search for 6.7-GHz methanol maser emission towards 87 galaxies. We chose the target sources using several criteria, including far-IR...
Radio-excess infrared galaxies: a new population of active galaxies? (1997)
Restricted Access. An open-access version is available at NASA ADS (alternative location)
Extremely Rapid Variations of Water Maser Emission from the Circinus Galaxy (1996)
Greenhill, L. J., Ellingsen, S. P., Norris, R. P., Gough, R. G., Sinclair, M. W., Moran, J. M., ...
The water maser lines in the nucleus of the Circinus galaxy vary on time scales as short as a few minutes, at least two orders of magnitude less than for other Galactic or extragalactic water masers....
Ellingsen, S.P., Von Bibra, M.L., McCulloch, P.M., Norris, R.P., Deshpande, A.A., Phillips, C.J.
Sorry, the full text of this article is not available here. Please click on the alternative location to access it.
VLBI observations of the 6.7 and 12.2 GHz methanol masers associated with NGC 6334F (1996)
Ellingsen, S. P., Norris, R. P., Diamond, P. J., McCulloch, P. M., Amy, S. W., Beasley, A. J., ...
We present milliarcsecond resolution images of the 6.7 and 12.2 GHz methanol maser emission associated with the well-known star formation region NGC 6334F. The images agree well with previous lower...
Ellingsen, S. P., Von Bibra, M. L., McCulloch, P. M., Norris, R. P., Deshpande, A. A., Phillips, C. J.
We report the results of the first complete survey of an area of the Galactic Plane for maser emission from the 6.7-GHz transition of methanol. The survey covers a 10.6-square-degree region of the...
Continuum emission associated with 6.7-GHz methanol masers (1995)
Ellingsen, S. P., Norris, R. P., McCulloch, P. M.
We have used the Australia Telescope Compact Array (ATCA) to search for continuum emission toward three strong 6.7-GHz methanol maser sources. For two of the sources, G339.88-1.26 and NGC 6334F...
Compact Radio Cores in Seyfert Galaxies (1994)
Roy, A. L., Norris, R. P., Kesteven, M. J., Troup, E. R., Reynolds, J. E.
We have observed a sample of 157 Seyfert galaxies with a 275 km baseline radio interferometer to search for compact, high brightness temperature radio emission from the active nucleus. We obtain the...
A Search for Extragalactic Methanol Masers (1994)
Ellingsen, S. P., Norris, R. P., Whiteoak, J. B., Vaile, R. A., McCulloch, P. M., Price, M.
A sensitive search for 6.7--GHz methanol maser emission has been made towards 10 galaxies that have yielded detectable microwave molecular--line transitions. These include several which show OH...